2019中考数学总复习第二轮纵向小专题复习专题9一元一次不等式组课件.ppt

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第二轮 纵向小专题复习,专题9 一元一次不等式组,1解不等式组:,解:解不等式,得:x ,解不等式,得:x2,不等式组的解集为:x2,2解不等式组:,解:解不等式,得:x2,解不等式,得:x3,不等式组无解,3.解不等式组 ,并写出不等式组的整数解,解:解不等式,得x-1,解不等式, 得x ,-1x ,不等式组的整数解为-1、0、1,4.解不等式组 ,并写出该不等式组的最小整数解,解:解不等式,得:x-1,解不等式,得:x4,-1x4,不等式组的最小整数解为0,5解不等式组 ,并把解集在数轴上表示出来,解:解不等式,得:x-2,解不等式,得:x1,在数轴上表示,的解集如下:不等式组的解集为:-2x1,6解不等式组 ,并把它的解集在数轴上表示出来,解:解不等式,得x3 解不等式,得x-1 在数轴上表示,的解集如下:不等式组的解集为:-1x3,谢谢!,

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